# USACallerLookup Free Phone Lookup API

**Canonical:** https://apis.io/apis/usacallerlookup/usacallerlookup-free-phone-lookup-api/  
**Provider:** USACallerLookup — https://apis.io/providers/usacallerlookup/  
**Base URL:** https://www.usacallerlookup.com/wp-json/ucl/v1  
**Documentation:** https://www.usacallerlookup.com/api/

USACallerLookup Free Phone Lookup API is published by [USACallerLookup](https://apis.io/providers/usacallerlookup/) on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Phone Lookup, Caller ID, robocall, FTC, and Telecom. The published artifact set on APIs.io includes an OpenAPI specification and API documentation.

No-auth, read-only REST API with three GET endpoints: reverse phone number lookup, area-code aggregates, and dataset stats. Backed by a public OpenAPI 3.1.0 contract.

## Machine-readable artifacts (4)

- **OpenAPI** — https://www.usacallerlookup.com/wp-content/uploads/api/openapi.json
- **Documentation** — https://www.usacallerlookup.com/api/
- **LLMsTxt** — https://www.usacallerlookup.com/llms.txt
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/usacallerlookup/refs/heads/main/apis.yml

## Tags

Phone Lookup, Caller ID, robocall, FTC, Telecom, Open Data, Anti-Fraud

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/usacallerlookup/usacallerlookup-free-phone-lookup-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/usacallerlookup/.